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TOPIC: Optimized Files Extremely Large

Optimized Files Extremely Large 10 Dec 2019 21:41 #103104

I fairly new to FCP and video editing in general. I'm making YouTube Video's for my wife. I'm using three cameras for multi-cam, as well as a shotgun mic, and lab mic as backup. After a day of filming, we need up with Approx. 250GB of files on a 500 GB External SSD Drive (Samsung T5).

I've told FCP to leave original files in place, and create optimized files on import. First time, it took all night and then I got a warning that I was running out of space on my SSD. Wait, what? I thought the optimized files were supposed to be smaller, not bigger?

So then, I move all the original SSD (T5) to an internal hard drive (7200 rpm), and then create a new FCP Project on my now blank SSD (T5), where it will now have close to the entire 500gb to make the optimized files.

Get up this morning, still not done and got the error I'm running out of room on the SSD (T5). This is crazy, how in the world can creating 250gb of video files converted to Optimized Files, would require more than 500gb of space.

When all this is said and done, all of the 250 GB of files, will end up being around 30 minutes of 1080p video for YouTube.

This can't be normal????

Computer Specs:

12 Cheesegrater Mac Pro, 64gb Ram, Internal SSD System, 3 4tb 7200rpm Hard Drives, OSX Mojave, 30k Geekbench Score
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Optimized Files Extremely Large 11 Dec 2019 11:37 #103126

  • Tom Wolsky
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Optimize files are very large, High quality files. Don’t optimize unless you have to. Switch off optimize for multicam in preferences. If the media doesn’t play well on your system create proxy files and edit that.

Also, if you’re importing from a camera archive FCP will not leave files in place.

That said, 500 GB external is pretty small these days for video files.
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Optimized Files Extremely Large 11 Dec 2019 16:59 #103133

Thanks for the reply. Would a 1 TB SSD Drive be sufficient to edit one video at a time? Each video would be 15-20 minutes each with multiple cameras and quite a bit of effects, think news type tags.

I'm so confused as I have watched countless youtube video's that seem to consistently say that I should be using Optimized Files for editing and Proxy files for Multi-Cam. All the video's I watched see to say that the proxy/optimized files would actually be smaller in size to make them be able to be edited faster in the timeline.

I tried to edit the video last night without optimized or proxy files, just the raw files taken from the cameras. It was so sluggish, and I'm editing on a 12 Core Mac Pro with 64GB or Ram, GTX 680 GPU.

I would think it would scream editing video!

I am using the following camera's if that makes a difference.

Canon EOS M50 w/Sigma 18-35, Canon Nifty Fifty, and Canon 22mm lens.
GOPRO 8
GOPRO 7 Black

My process for getting the files from the cameras is as follows:

Remove Cards
Import Each Camera Files via my Mac Finder. I drag and drop to the locations I want them stores, so technically I'm not importing, I'm coping I guess.

I'm only taking the Video files and not the other misc files that are stored with the video files on each card.

Then I import into FCP X. I have confirmed that FCP is leaving the root video files in place rather than copy to the project location on my SSD Drive and only placing the optimized files on the SSD until it runs out of space.

I can't believe that all those Youtube videos had it complete backwards as it relates to what Optimized and Proxy files actually do.
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Optimized Files Extremely Large 12 Dec 2019 12:14 #103162

  • joema
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barry.johns wrote:
Thanks for the reply. Would a 1 TB SSD Drive be sufficient to edit one video at a time? Each video would be 15-20 minutes each with multiple cameras and quite a bit of effects, think news type tags.

It's not the length of the final edited video but the total cumulative length of all material shot to produce that, including proxies, cache, render files, analysis files, etc. E.g, over 3 cameras maybe you shoot 40 min each and produce a final 20 min video. The space required is something like:

3 x (40 min x 60 sec per min x data rate of each camera). If the data rate of each camera averages 12 MB/sec, that would be 86 GB, not too bad. Optimized media is about 6x the size of H.264, so (if used) that would be 516 GB. Proxy media is about 0.7 times the original H.264 size, so very roughly double to about 172 GB. Optimized plus proxies would be 688 GB, and you haven't even created a timeline yet. In general you do not need optimized media only proxies.

Render files consumption is based on timeline length and whether you use background rendering. If background rendering is on, the old render files are not deleted and they will pile up. In general disable background rendering in FCPX preferences. If needed, manually render the timeline via CMD+A to select all clips and CTRL+R to render. They will gradually become unrendered but this allows you to control the process.

If optical flow files or stabilization analysis files are used, these take up additional space. You can delete render files within FCPX by selecting the library, then Files>Delete Generated Library Files>Delete Render Files>All. However this does not delete optical flow analysis files.

The bottom line is for the size task you mentioned, I'd suggest 2 TB SSD at a minimum.

barry.johns wrote:
...I'm so confused as I have watched countless youtube video's that seem to consistently say that I should be using Optimized Files for editing and Proxy files for Multi-Cam...

For 4k H264 multi-cam you typically need proxies. You do not necessarily need optimized media.

barry.johns wrote:
....I tried to edit the video last night without optimized or proxy files, just the raw files taken from the cameras. It was so sluggish, and I'm editing on a 12 Core Mac Pro with 64GB or Ram, GTX 680 GPU...I would think it would scream editing video!...

That is an old Mac Pro, uses a Xeon CPU which does not have Quick Sync video acceleration. That machine is typically very sluggish at editing 4k H264, no matter what the GPU. A GPU cannot meaningfully accelerate encode/decode of H.264 since the core algorithm is inherently sequential and not amenable to parallelization.

barry.johns wrote:
....Remove Cards
Import Each Camera Files via my Mac Finder. I drag and drop to the locations I want them stores... I'm only taking the Video files and not the other misc files that are stored with the video files on each card...

This is a tricky area. Sometimes you can get away with copying just the video files, and other times it will cause problems. The most notorious case is AVCHD which can cause major performance issues of the bare .MTS files are copied and imported "in place".

A safer way is consider externally re-wrapping the files using the 3rd party utility EdityReady, then import the resultant files using "leave files in place". This bundles in all the metadata info from the extra files. With your specific codecs I don't know if this procedure would be needed.

Or you can import strait from the camera card or create a "camera archive", as shown in MacBreak Studio #388:
www.rippletraining.com/articles/free-vid...hives-final-cut-pro/

It's best to specifically control where the proxies and cache files are placed. You do this with the Library Inspector>Storage Locations>Modify Settings>Media and also >Cache. This must be done before creating proxies.

An inexpensive 3rd party tool to manage FCPX generated files is Final Cut Library Manager: www.arcticwhiteness.com/finalcutlibrarymanager/
Last Edit: 12 Dec 2019 12:17 by joema.
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